Thanks for the compliment!
Here's a picture that shows how the covers are made
These are the C column covers without the wings (which really don't do much). It's pretty easy to cut the profile of the window (or wall if no window) from cardboard as a template then cut the two sides, which are the same. then copy to plywood and cut with a jigsaw. A belt sander helps make the final "adjustments" If you don't need the wood look, you could easily cover this with felt, naugahyde, etc. (and the details won't show underneath!)
The holes are located to hit a rivnut I inserted in the metal column. They are the only thing that holds the covers in place.
If I were recommending a woodworking tool, I would suggest this HD product...
http://www.homedepot.com/p/RIDGID-O...C-_-NavPLPHorizontal1_rr-_-NA-_-100061671-_-N
It's expensive (for a sander) but it offers a level of control in your sanding that is hard to beat! A belt sander would work as well, but is a bit tougher to control... does the same thing though for about $50.
For the rear rib, I'm bolting in a base board, then it will be easier to attach a more detailed trim piece to it... Hard to get a good picture of the process, but I'll be documenting some of the ceiling stuff as I progress.
FYI: No one should take 3 years to do the inside of a van (me)!... I've got to speed up the work (or move to a southern location where I can work on it year 'round. It would help if the van would fit in the garage, but that ain't gonna happen!